10891386 has 48 divisors (see below), whose sum is σ = 26159328. Its totient is φ = 3247200.

The previous prime is 10891379. The next prime is 10891399. The reversal of 10891386 is 68319801.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10891386.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12856 + ... + 13676.

It is an arithmetic number, because the mean of its divisors is an integer number (544986).

Almost surely, 2^10891386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10891386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13079664).

10891386 is an abundant number, since it is smaller than the sum of its proper divisors (15267942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10891386 is a wasteful number, since it uses less digits than its factorization.

10891386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 904 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 10891386 is about 3300.2099933186. The cubic root of 10891386 is about 221.6636005631.

The spelling of 10891386 in words is "ten million, eight hundred ninety-one thousand, three hundred eighty-six".